On the method of using glycolic acid and salicylic acid together
The technique of skin care for husband, glycolic acid (Glycolic Acid) and salicylic acid (Salicylic Acid) are both commonly used. However, whether the two can be used together needs to be studied in detail.

Glycolic acid is an alpha-hydroxy acid with tiny molecules that can quickly penetrate the surface of the skin. Its function is to loosen the connection between keratinocytes, promote keratin renewal, make the skin smooth and tender, and help improve uneven skin tone and brighten light spots.

Salicylic acid is a beta-hydroxy acid, which is fat-soluble and can penetrate deep into pores, remove oil and blockages, treat acne well, and can also be anti-inflammatory and slow down skin redness and swelling.

If the two are used together, it is inherently synergistic. Glycolic acid opens the skin channel, making salicylic acid easier to penetrate; salicylic acid helps the diffusion of glycolic acid, increasing its range of effectiveness. However, there are also risks. Both are irritating, and they may cause skin intolerance, redness, swelling, tingling, and desquamation.

Therefore, if you want to use glycolic acid and salicylic acid together, you should first check the skin's tolerance. You can try it alone first, starting from a low concentration. For example, choose a concentration of 2% - 5% for glycolic acid and a concentration of 0.5% - 1% for salicylic acid. Use it every few days until the skin gets used to it, and then increase the frequency. If used in combination, it is advisable to apply glycolic acid first. After drying, apply salicylic acid thinly, and avoid the eye area and damage. After use, you must use heavy sun protection, because the two make the skin more sensitive to ultraviolet rays.

In short, when glycolic acid and salicylic acid are used together, if used properly, you can get good results; if you are not careful, it will hurt the skin. Be careful to act according to the shape of your own skin.